7522results about How to "Prevent splash" patented technology

The invention relates to the technical field of batteries, in particular to a battery cell and a battery pack. According to the battery cell, a first cover plate is provided with a pressure relief channel and a supporting boss; the pressure relief piece is mounted in the pressure relief channel; the blocking piece is arranged on the supporting boss, the blocking piece and the pressure relief channel are oppositely arranged in a spaced mode, a first pressure relief hole is formed in the blocking piece, and a second pressure relief hole is formed in the insulation protection piece; the effective opening area of the pressure relief piece is S1, the total area of the first pressure relief holes is S2, the total area of the second pressure relief holes is S3, S2 / S1 is larger than or equal to 1.22 and smaller than or equal to 1.3, and S3 / S2 / 1.6 is larger than or equal to 1.6 and smaller than or equal to 2. When the temperature of the battery cell is relatively low, the insulation protection piece has enough strength and ensures that the exhaust rate is not influenced; when the internal insulating part is fused and fails, and the pole group moves in the direction close to the pressure relief part, the baffle part can support the pole group to ensure the exhaust requirement, and can also prevent comburent in the battery cell from splashing outwards through the pressure relief part, so that the safety performance of the battery cell is improved.

The invention discloses an environment-friendly steel pipe cutting machine capable of preventing chippings from scattering all around, and belongs to the technical field of steel pipe cutting machining. The environment-friendly steel pipe cutting machine comprises a rack stably placed above the ground, a first motor is fixedly installed on the upper surface of the rack, and a discharging pipe is rotatably installed on the upper surface of the rack in a penetrating mode; a cutting machine shell is installed on the outer side of the discharging pipe in a lifting mode through an air cylinder, meanwhile, a cutting blade is rotatably installed on the inner side of the discharging pipe, a protection pipe is connected to the upper end of the discharging pipe, a cutter hole is formed in the middle of the protection pipe, sliding blocks are symmetrically arranged in the cutter hole in a sliding mode, and corrugated blocking pieces are arranged on the outer sides of the sliding blocks. And meanwhile, a sealing clamping assembly is further arranged on the protection pipe, and a cleaning assembly used for cleaning residual scraps on the inner wall is further arranged on the inner side of the protection pipe. According to the environment-friendly steel pipe cutting machine capable of preventing the chippings from scattering all around, a cutting area can be effectively covered and protected, the chippings are prevented from splashing and scattering, and the chippings can be conveniently collected after cutting is completed.

The invention relates to the technical field of hardness detection, in particular to detection equipment for gate valve machining and a detection method thereof. Comprising a base, multiple sets of supporting shafts are fixedly connected to the base, and a top plate is installed at the top ends of the multiple sets of supporting shafts; two groups of vertical plates are mounted on the top plate, and lifting assemblies are mounted on the two groups of vertical plates; two groups of fixing plates are arranged on the base, and two groups of protection mechanisms are arranged between the two groups of fixing plates; a third motor is arranged on one set of fixing plates, the output end of the third motor is in transmission connection with a second threaded rod, the lifting assembly drives the flashboard to move downwards into the two sets of protection mechanisms, the third motor drives the detection mechanism to extrude the flashboard for hardness detection, and the lifting assembly drives the flashboard to descend to different heights. Therefore, the deformation condition of the flashboard bearing the preset pressure value at different descending heights can be detected.

The invention relates to the technical field of plastic mold drilling, in particular to plastic mold numerical control precision drilling equipment and a using method thereof.The plastic mold numerical control precision drilling equipment comprises a base, a fixed table is movably installed at the top of the base, a rack is fixedly connected to the top of the base, a movable table is installed on the rack, and a pushing plate is slidably connected to the bottom of the movable table; a collecting assembly and a drilling assembly are arranged on the pushing plate; according to the device, firstly, the area around a drilling point can be comprehensively shielded through the collecting assembly, the same contact surface can be autonomously formed according to the uneven surface of the plastic mold, and the waste intercepting effect is further enhanced; and the drilling assembly is matched, during drilling, instant smashing of filiform plastic waste is achieved, efficient collection and treatment of the waste are achieved, air is blown into the material blocking and collecting barrel, on one hand, negative-pressure material suction is assisted, the waste collecting effect is improved, and on the other hand, synchronous cleaning treatment is achieved when the drill bit rotates and ascends.

The invention provides a welding device for ship repair, and belongs to the technical field of welding. Comprising a base, a supporting plate is fixedly arranged on the surface of the base, a sliding plate is arranged on the inner wall of the supporting plate in a sliding mode, a welding gun for welding the ship welding position is installed on the surface of the sliding plate, and a cleaning part for cleaning welding slag generated during welding of the welding gun is installed on the surface of the sliding plate; by arranging the cleaning part, welding can be carried out while the whole equipment is moved, welding slag generated by welding at the welding position can be adsorbed during welding, splashing of the welding slag is prevented, a pipeline can be knocked through cooperative work of a motor, a rotating rod, a round wheel, a connecting rod, a sliding block, a downward pressing rod, a torsion spring, a rotating strip, a spring hammer and other components, and therefore the pipeline can be conveniently welded. Welding slag in the pipeline is knocked off due to vibration and sucked away by the fan, cleaning of the welding slag adsorbed to the inner wall of the pipeline is achieved, smoothness of the pipeline is guaranteed, and attachment of the welding slag to the inner wall of the pipeline is effectively reduced.

The utility model provides an automatic welding device for an epoxy zinc-based composite stand column, and relates to the technical field of welding. The utility model is used for solving the technical problems in the prior art that a large amount of spark sputtering substances are generated during welding, so that workers are easily burnt, and fire-fighting hidden dangers also exist. The automatic welding device for the epoxy zinc-based composite stand column comprises a base, a workbench, a servo motor, a rotary disc, a welding gun and a clamping assembly, the workbench is installed above the base, the rotary disc is rotationally arranged on the workbench, the servo motor is installed on the base, an output shaft of the servo motor is fixedly connected with the rotary disc, and the welding gun is fixedly connected with the rotary disc. A welding gun and a clamping assembly used for clamping the stand column and preventing the stand column from toppling are arranged on the workbench. The elastic pieces on the two sides push the second guide rods and the contact plates on the two sides to get close to the middle, the second guide rods drive the connecting rods and the cover plates fixedly connected with the connecting rods to get close to the middle, the two cover plates shield the working area of the workbench, and the effect of preventing sparks from sputtering during welding is achieved.

The invention belongs to the technical field of automobile part welding, and particularly relates to an automobile part machining-based welding system which comprises a welding table, a supporting plate is fixedly connected to the middle of the rear side of the upper end face of the welding table, two first sliding rods are slidably connected to the upper side of the supporting plate, and a fixing disc is fixedly connected to one end of a rotating frame. A plurality of clamping blocks are connected to the fixing disc in a sliding mode, and the welding table is provided with a follow-up type splash-proof slag knocking mechanism used for knocking welding slag at a welding seam into pieces. According to the following type splash-proof slag knocking mechanism, caked welding slag on the periphery of a welding seam can be knocked into pieces, follow-up personnel can conveniently clean the welding slag on the welding seam, the cleaning difficulty is reduced, in the striking process, the first sponge pads on the two sides are pressed on the outer wall of a pipeline through the pressing blocks, the welding slag can be intercepted by the first sponge pads when splashing, and the welding slag is prevented from splashing. Therefore, welding slag can be prevented from splashing to areas outside the welding seam, and unnecessary cleaning links are avoided.

The invention discloses a high-precision concrete liquid penetration test integrated system and a use method. The system comprises a closed liquid containing box, a self-absorption turbine, a tank body, an upstream high-precision flow meter, a downstream high-precision flow meter, a data acquisition port set, a downstream data acquisition port set, a liquid pressure detector, a digital display differential pressure sensor, a concrete permeation device and a multi-channel recorder. The system can comprehensively collect the flow velocity, the surface pressure and the up-down pressure difference before and after the liquid flows through the concrete test piece, and synchronously display real-time data to computer software. Synchronous data acquisition ensures the accuracy of test data under different boundary conditions, and the system provided by the invention can accurately measure the permeability of concrete test pieces with different shapes and different fracture states under different pressures on the premise of not influencing the structural integrity of the test pieces.

The invention relates to the related technical field of reagent mixing, and discloses a medical immunoassay reagent mixing processor which comprises a device body, a stepping motor is mounted on the upper side of the interior of the device body, a circular plate is fixedly arranged at the output end of the stepping motor, a disc is arranged on the upper side of the circular plate, and a plurality of placement grooves are formed in the interior of the disc in a circumferential array mode. An adjusting assembly is arranged in the middle of each containing groove. Centrifugal force generated by rotation of the disc is matched with inclined arrangement of the test tube, so that a reagent moves up and down along the inner wall of the test tube, and the reagent layered up and down in the test tube can be quickly and uniformly mixed up and down; the reagent in the test tube is prevented from being splashed through the sealing cover; under the guiding action of a convex block on an ejector rod and the elastic action of a hollow elastic piece, a plurality of sleeves and the test tube are shaken up and down, so that the efficiency of quickly and uniformly mixing the reagents which are layered up and down in the test tube is improved.

The invention discloses a multifunctional automatic laser cutting machine, and relates to the technical field of laser cutting, the multifunctional automatic laser cutting machine comprises a base, a support is fixedly mounted at the top of the base, a first motor is fixedly mounted at the top of the support, a threaded rod is fixedly mounted at the output end of the first motor, and a sleeve is in threaded connection with the threaded rod; a clamping device is arranged at the top of the base, a collecting device is arranged at the top of the base, a ventilation device is arranged at the top of the clamping device, and the clamping device comprises an electric push rod, cutting equipment, a laser head, a bevel rod, a cutting table, a clamping plate, a first bevel block, a connecting rod and a protective plate. A workpiece can be effectively fixed to the cutting table, the workpiece is prevented from moving or shaking in the laser cutting process, the cutting precision is improved, and the connecting rod moves to drive the protection plate to move.

The invention discloses punching equipment for solid wood furniture board production. The punching equipment comprises a horizontal driving assembly; the first hydraulic telescopic device is arranged on the horizontal driving assembly; the perforating machine is arranged at the driving end of the first hydraulic telescopic device; the flying chip prevention assembly comprises a top baffle, an annular plate and a telescopic hose, the top baffle is connected with the driving end of the first hydraulic telescopic device, the annular plate is connected with the top baffle through the telescopic hose, and the annular plate is connected with the horizontal driving assembly through a second hydraulic telescopic device; a punching space is defined by the top baffle, the annular plate and the telescopic hose. And the wood chip cleaning device is arranged on the horizontal driving assembly, and the wood chip cleaning device is slidably connected with the flying chip preventing assembly and used for cleaning wood chips in the punching space. Therefore, wood chips can be conveniently cleaned, and meanwhile the wood chip cleaning device has the advantages of being small in noise and low in energy consumption.

The invention discloses a sheet metal laser drilling device, relates to the field of sheet metal processing, solves the problem that it is difficult for existing laser drilling devices to clean up the residues generated by laser drilling in time, comprises: a device base and a processing table fixedly installed on the top of the device base, a processing plate fixedly installed on the top of the processing table, a plurality of supporting tooth plates equidistantly distributed are fixedly installed on the inner side of the processing plate, driving slide rails are fixedly installed on both sides of the processing table, a U-shaped frame is fixedly installed between the two driving slide rails, and a laser transmitter is arranged at the bottom of the U-shaped frame; further comprises: a slag collecting mechanism, which is used to collect the sheet metal residues generated by the laser transmitter, and the slag collecting mechanism is installed inside the processing table; the invention can receive sparks and residues generated by the punching point at the bottom of the sheet metal when the laser transmitter punches the sheet metal through the slag collecting mechanism, prevent the sparks and residues from splashing, solve the problem of residue accumulation, and thus achieve the effect of residue collection.

The invention relates to a device and a method for photoelectrochemical mechanical polishing of a semiconductor substrate aiming at electric field uniform arrangement and light field intercoordination, and the device comprises a rack, a machine body unit, a polishing disc assembly, a conductive base, an LED ultraviolet light source, an electrochemical workstation and a moving assembly, the machine body unit is used for loading and unloading the polishing disc assembly; the electrochemical workstation and the LED light source power supply respectively supply power to the conductive base and the LED ultraviolet light source in the machining process, the LED ultraviolet light source is fixed on the polishing disc and acts on a semiconductor substrate workpiece in machining together with the polishing disc in the workpiece polishing process, and the semiconductor substrate workpiece is bonded on the conductive base. The LED light source directly irradiates the surface of a machined workpiece, the distance between the light source and a polishing solution is effectively shortened, the effect of a light field is improved, meanwhile, the intensity of the light field in different directions along the radius is adjusted, the light field and an electric field applied to the workpiece act together to guarantee uniform oxidation of the surface of the workpiece, and the flatness of the machined workpiece is guaranteed.

The invention relates to the field of biological devices, in particular to a blood culture bottle positive sample transfer device which comprises a connecting pipe and at least two puncture needles, the puncture needles are communicated with an opening of the connecting pipe, a protective cover is arranged on the outer wall of the connecting pipe, and the protective cover is arranged on the outer wall of the connecting pipe. And the puncture needle close to the protective cover is arranged in the protective cover. A connecting seat is arranged at one end of the connecting tube, the protective cover is arranged on the outer wall of the connecting seat, and the puncture needle is communicated with the connecting tube through the connecting seat. And the protective cover is in threaded connection with the connecting seat. The device has the advantages that the blood sample in the culture bottle can be conveniently transferred, and pollution and biological hazards to the blood sample are avoided as much as possible.

The invention discloses a production welding tool for stainless steel pipe fittings, and relates to the technical field of pipe fitting welding, and the production welding tool comprises a composite mechanism. According to the production welding tool for the stainless steel pipe fittings, through the design of a composite mechanism, the pipe fittings at one end are vertically placed on the top of the bearing mechanism, the effect of fixing the pipe fittings is achieved through the bearing mechanism, then the pipe fittings at the other end are vertically placed in the butt joint mechanism, and the effect of stabilizing components is achieved through the butt joint mechanism; the lifting butt-joint mechanism is in butt-joint fit with the bearing mechanism, so that the anti-deviation effect is achieved, manual calibration errors are avoided, the welding effect is prevented from being influenced, the operation efficiency is improved, the welding mechanism is attached to the joint of the two pipe fittings, the bearing mechanism is driven to rotate through a rotating block, the constant-speed welding effect is achieved, the welding quality is improved, and the size of a welding seam is reduced. And the welding precision is improved, chippings can occur in the welding process, the protection ring plays a role in shielding and wrapping, and chippings are prevented from splashing.

The invention discloses a building construction cement strength detection device, and relates to the technical field of cement strength detection. Comprising a pressure testing machine and a blocking and cleaning mechanism arranged on the pressure testing machine, the pressure testing machine comprises a base platform, a mounting plate and a hydraulic cylinder, the base platform is connected with the mounting plate through a supporting column, the hydraulic cylinder is mounted at the top of the mounting plate, and the output end of the hydraulic cylinder extends below the mounting plate and is provided with a pressing plate; a stepped groove communicating with the top of the base platform is formed in the front side of the base platform, and a waste collecting box is placed on the stepped groove. The blocking and cleaning mechanism comprises a door plate, a rear push plate module and side baffle plate modules which are symmetrically arranged left and right; the door plate is arranged in front of the pressure tester. According to the invention, the blocking and cleaning mechanism is mounted on the pressure testing machine, so that chippings of a cracked cement concrete sample can be prevented from splashing all around, meanwhile, the chippings can be automatically cleaned, the detection safety is improved, and the influence on the environment of a laboratory is avoided.

The invention belongs to the field of new energy automobile power batteries and the related field of laser welding, and discloses a technological parameter optimization method and system for spot ring light spot laser welding spatter suppression, and the method comprises the steps that the relation between the preheating temperature of an outer ring light beam to a weld joint and welding technological parameters is obtained; establishing optimization constraint conditions of the preheating temperature, and deducing optimization constraint conditions of process parameters; acquiring a preset range of the process parameters; and substituting the technological parameter values in the preset range into optimization constraint conditions of the technological parameters, and combining the technological parameters meeting the preheating temperature into optimized technological parameters. According to the method, by optimizing the preheating temperature of the annular light beam to the welding seam, regulation and control are directly carried out according to key factors for forming spatter, and generation of spatter is effectively restrained; by optimizing technological parameters, the stability of the welding process is improved, and therefore welding defects are reduced.

The invention belongs to the technical field of ball valve production equipment, particularly relates to a ball valve machining lathe and method for machining a raw material into an accurate spherical valve element, and aims to overcome the defects that in the prior art, after the valve element is turned, the valve element cannot be polished, and when the valve element is turned, waste chips cannot be conveniently collected. The lathe comprises a base, the base is of a box structure, a discharging hole is formed in the inner wall of the top of the base, a material guiding plate is installed in the discharging hole, the bottom of the material guiding plate extends into the base, a baffle is fixedly installed on one side of the top of the base, and a driving mechanism is connected to the baffle in a penetrating mode. According to the valve element machining device, a turned valve element can be ground and polished, so that good convenience can be provided when the valve element is machined, sweeps can be prevented from splashing everywhere when the valve element is machined, and meanwhile, the sweeps can be conveniently collected and cleaned.

The drilling device for mechanical part machining comprises a machining table and a drilling machine body, a protection mechanism is arranged on the drilling machine body, the drilling machine body comprises a feeding table, a motor and a drill bit, the motor is installed on the feeding table, and the drill bit is driven through the motor; the protection mechanism comprises a protection sleeve, a fixed sleeve, a transmission sleeve, an adjusting shaft sleeve, a compression spring, a first valve block, a second valve block, a first wave spring, a second wave spring, a start-stop piston and a grinding piece. The protection mechanism is installed on the outer side of the drill bit. The device has the advantages of being high in safety, convenient to operate and low in production cost, and the problems that metal chippings and cooling liquid generated in the drilling process of traditional equipment are prone to splashing, cleanliness and safety of the working environment are affected, supply of the cooling liquid is generally fixed and cannot be adjusted according to the actual rotating speed and the load condition of a drill bit, and the service life of the drill bit is affected are solved. And the cooling effect is not good.

The invention relates to the technical field of welding devices, and discloses an automobile part automatic welding device which comprises a main plate, the top of the main plate is fixedly connected with a first fixing plate, the left side of the main plate is fixedly connected with a supporting plate, the top of the main plate is fixedly connected with a sliding column, and the front portion of the sliding column is slidably connected with a guide rail. The bottom of the guide rail is slidably connected with a welding gun, the top of the main plate is fixedly connected with a second fixing plate, and the front portion of the first fixing plate is fixedly connected with a leakage plate. When welding is started, a first elastic telescopic plate drives a first push plate to move, and therefore a part needing to be welded can be clamped; and the inclined plate moves to push the clamping plate to move, so that the other side of the part can be clamped, the part can be more reliably and stably fixed to the workbench, and the machining precision is improved.

With the stator feeding direction as the benchmark, the machine comprises a feeding station, an angle alignment station, a marking and code scanning station, an external dimension detection station, an end face run-out detection station, a wire slot go gauge detection station, an air shower cleaning station, a sheet gap detection station, an end face detection station and a product discharging station in sequence, and the feeding station comprises a feeding chain plate line and an equidistant conveying assembly; the equidistant conveying assembly can carry stators located on a feeding chain plate line to a feeding station, an angle alignment station, a marking and code scanning station, an external dimension detection station, an end face run-out detection station, a wire slot go gauge detection station, an air shower cleaning station, a sheet gap detection station, an end face detection station and a product discharging station in sequence. And the equidistant conveying assembly 120 synchronously carries the stators of the current work station to the next work station.

The utility model relates to the technical field of metal product drilling processing, in particular to a metal product punching device convenient to clean, which can effectively prevent metal scraps from splashing, prevent workers from being damaged and facilitate cleaning of the splashing scraps. Comprising a machining table, four supporting legs are fixedly arranged at the bottom end of the machining table, a support is fixedly installed at the top end of the machining table, two supporting plates are symmetrically and fixedly connected to the top of the support, guide rods are fixedly connected to the two supporting plates, a guide sliding groove is formed in the top end of the support, and a sliding plate is slidably arranged on the support through cooperation of the guide sliding groove; two sets of clamping cylinders are fixedly installed on the support in a bilateral symmetry mode, the output ends of the two sets of clamping cylinders are fixedly connected with clamping plates, the collecting box communicates with an air draft hose, the bottom of the connecting plate is fixedly connected with an elastic conical barrel, the input end of the air draft hose communicates with the interior of the elastic conical barrel, and the drill bit sleeve is sleeved with the elastic conical barrel. The bottom of the elastic cone is lower than that of the drill bit.

The invention discloses homogeneous stirring equipment for preparing cold water fish feed grease, and relates to the technical field of stirring, and the homogeneous stirring equipment comprises a bin body mechanism. According to the homogenizing and stirring equipment for preparing the cold water fish feed grease, through the design of the bin body mechanism, materials enter from the top of the processing mechanism, circulate and enter the bin body shell, then a motor is started, a central rotating shaft is controlled by the motor to rotate, and the interiors of the materials are rotated by paddle plates, so that the effect of mixing the materials is achieved; through the design of the multiple paddle plates, the stirring range is enlarged, the mixing efficiency is improved, the uniform mixing effect is achieved, the paddle plate grooves are formed, the rotating efficiency is improved through the grooves, the grooves can disturb boundary layers on the surfaces of the paddle plates, resistance is reduced, the flowing efficiency of fluid is improved, and therefore the stirring effect of the paddle plates in the fluid is enhanced; cavitation and cavitation phenomena are reduced, the possibility of generating cavitation and cavitation under high-speed movement is reduced, and the service life of the paddle board is prolonged.

The invention discloses an automatic sample weighing instrument. The automatic sample weighing instrument comprises a main body, a lofting module, a sampling module, a sample weighing module and a cleaning module, the lofting module and the sampling module are both movably arranged on the main body, and the sample weighing module and the cleaning module are both fixedly arranged on the main body; the lofting module is used for fixing and storing samples; the sampling module is used for extracting the sample stored in the sample placing module and transferring the sample to the sample weighing module, the sampling module comprises a vibration exciter and a sampling mechanism capable of being opened and closed, the vibration exciter is connected with the sampling mechanism, and the vibration exciter can vibrate the sample in the sampling mechanism so as to add the sample into the sample weighing module; the sample weighing module is used for weighing the weight of a sample; the cleaning module is used for cleaning the sampling module. The sampling module of the automatic sample weighing instrument is arranged, so that the sampling mechanism can be closed after a sample is taken, and flying dust pollution in the transfer process is avoided. Moreover, not only can the sample be taken, but also the sample can be transferred and added, so that the automatic sample adding process is simplified, and the sample adding efficiency is improved.

The forging device comprises a device body, a machining table is arranged on the front face of the device body, a sliding table is installed at the end, away from the device body, of the machining table, a forging hammer is arranged at the position, located above the machining table, of the device body, and protection mechanisms are arranged on the outer walls of the two sides of the device body correspondingly. The protection mechanism comprises moving frames arranged on the two sides of the device body, a rotating plate is installed between the two moving frames, a clamping mechanism is installed on the outer wall of the side, close to the device body, of the rotating plate, and limiting mechanisms are arranged in the two moving frames. According to the device, when the device body is used for forging a metal workpiece, two protective curtains of the protective mechanism are controlled to be unfolded, and a rotating plate in a vertical state is matched, so that the workpiece which is subjected to forging operation can be surrounded, and chippings generated in the workpiece forging process are prevented from splashing all around; and a good protection effect is achieved on workers near the device body, and forging safety accidents are reduced.

The utility model discloses a waste scrap collecting device of an abrasive belt type polishing machine, which belongs to the technical field of polishing and comprises a protection box, a supporting table is fixedly connected with an inner cavity of the protection box, a first motor is fixedly mounted at the top of the supporting table, a transmission assembly is arranged on the first motor, an abrasive belt is arranged on the transmission assembly, and the abrasive belt is fixedly connected with the inner cavity of the protection box. An inner cavity of the protection box is fixedly connected with a connecting plate, and the two sides of the connecting plate are fixedly connected to the bottom face and the inner wall of the inner cavity of the protection box correspondingly. According to the abrasive belt polishing device, when the abrasive belt is used for polishing materials, the second motor is used for driving the roller brush to rotate, and the roller brush is used for brushing the surface of the abrasive belt, so that sweeps adsorbed to the surface of the abrasive belt are cleaned, the function of cleaning the sweeps attached to the surface of the abrasive belt is achieved, and the effect that the abrasive belt polishes the materials is guaranteed; and the practicability of the device is improved.

The utility model discloses a bamboo board grinding machine with a dust removal function, which belongs to the field of bamboo board production and processing equipment and comprises a grinding machine frame, a support is fixedly connected to the middle of the outer side of the grinding machine frame, electric push rods are fixedly connected to the front portion and the rear portion of the upper end of the support, and output shafts are arranged at the lower ends of the interiors of the electric push rods. A limiting frame is fixedly connected to the lower end of the output shaft, a grinding roller is rotationally connected into the limiting frame, a second servo motor is installed on the left side of the grinding roller, the grinding roller can be limited by arranging the limiting frame, meanwhile, a plurality of arc-shaped baffles are arranged in the limiting frame, and two dust collection channels distributed at the front end and the rear end of the grinding roller are formed through the arc-shaped baffles; when the polishing roller polishes the bamboo board, the negative pressure pump is started to suck scraps generated by polishing into the dust collection channel, and the scraps are adsorbed and cleaned, so that the bamboo board polishing machine achieves the dust removal function, scrap splashing is avoided, and protection on the health of workers and the working environment is enhanced.

The utility model discloses a drilling device for roller shutter door processing, which belongs to the technical field of roller shutter door processing equipment and comprises a processing table and a drilling head for drilling a roller shutter door, the top end of the drilling head is fixedly connected with a rotating rod, and the top end of the rotating rod is fixedly connected with an output shaft of a rotating motor. A mounting plate is fixedly connected to the fixed end of the rotating motor, limiting rods are slidably connected to the two ends of the top of the mounting plate through formed through grooves, limiting blocks are fixedly connected to the top ends of the limiting rods, inverted shielding boxes are fixedly connected to the bottom ends of the two limiting rods, and the top ends of the shielding boxes are movably connected with rotating rods through formed through grooves; the side face of the limiting rod is sleeved with a pressurizing spring, the top end and the bottom end of the pressurizing spring are fixedly connected with the mounting plate and the shielding box respectively, the top end of the mounting plate is fixedly connected with the moving end of an electric telescopic rod, drilling chippings are shielded by arranging the shielding cover, the drilling chippings are prevented from splashing, the air environment is prevented from being polluted, and the environment friendliness of the device is improved.

The utility model relates to the technical field of material distribution, in particular to a concrete production material distribution mechanism for a concrete pump, which comprises a mounting seat mounted on the side surface of a concrete pump truck, a hydraulic cylinder is fixedly connected to the inner bottom surface of the mounting seat, and the output end of the hydraulic cylinder is fixedly connected with a lifting frame. A lifting frame is fixedly connected to the output end of the hydraulic cylinder, a material distribution frame is fixedly connected to the surface of one side of the lifting frame, a fixing seat is fixedly connected to the upper surface of the material distribution frame, and an arc-shaped fixing plate is connected to the surface of the other side of the fixing seat in an embedded mode. Limiting grooves and limiting rods limit lifting of the lifting frame, so that the height of the material distribution frame is adjustable, material distribution can be further conducted on flower bed molds with different thickness requirements, a first roller and a second roller are used for conducting paving operation, material distribution is more uniform, the material distribution frame prevents concrete from splashing, and a stepping motor is protected.

The utility model discloses a new energy automobile shell surface polishing device which comprises a workbench, a first fixing plate, a shell body and a polishing assembly, the bottom of the first fixing plate and the top of the workbench are movably installed, the side end of the shell body and the side face of the first fixing plate are detachably installed, and the bottom of the polishing assembly and the top of the workbench are fixedly installed. The grinding assembly comprises a vertical plate, a first telescopic rod, an arc plate, a second motor and a first grinding wheel, the bottom of the vertical plate and the top of the workbench are fixedly installed, the side face of the first telescopic rod and the side face of the vertical plate are fixedly installed, the outer surface of the arc plate and the end of the first telescopic rod are fixedly installed, and the outer surface of the second motor and the inner surface of the arc plate are fixedly installed. The outer surface of the first grinding wheel and the inner surface of the arc plate are movably installed, and the middle of the first grinding wheel and the output end of the second motor are fixedly installed. And by arranging the grinding assembly, the effect of grinding the inner wall and the outer wall of the automobile exhaust pipe at the same time is achieved, and the grinding machining efficiency of the exhaust pipe is improved.